Choosing Appropriate Appraisal to Describe Peak-Spatial Features of Rock-Joint Profiles
Publication: International Journal of Geomechanics
Volume 20, Issue 4
Abstract
Understanding the contact behaviors of rock joint is of fundamental importance in many rock engineering practices. Most of the available contact models rely on the spatial features of asperity peaks as input parameters, such as peak density, radius, and height. However, there is no general accepted appraisal to characterize the spatial features of peaks distributed on the rough surfaces. The present study clarified how different peak identification criteria, accounting for the number of required neighboring points (three, five, and seven points), affects the peak spatial features for a rock joint profile [two-dimensional (2D)]. The three-point peak (3PP) criterion appears to be the most appropriate appraisal to identify the peaks for rock joint profiles, and was suggested to capture the peak spatial features. Further discussion of the effects of both sampling interval in the -direction and preselected peak-threshold value in the -direction on the peak spatial features of joint profile were provided on the basis of the 3PP criterion.
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Data Availability Statement
All data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
The authors gratefully acknowledge the support from the Natural Science Foundation of China under Projects 41672302, 41402247, and 41731284, and from the Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan), under Project CUGGC09.
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Published In
International Journal of Geomechanics
Volume 20 • Issue 4 • April 2020
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©2020 American Society of Civil Engineers.
History
Received: Oct 11, 2018
Accepted: Sep 20, 2019
Published online: Jan 29, 2020
Published in print: Apr 1, 2020
Discussion open until: Jun 29, 2020
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